Beyma 15P80Nd

• Sensitivity (1W, 1m, infinite baffle) SPL1W 98.7dB
• Frequency response 40 - 4000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 39Hz
• Mechanical quality factor QMS 5.10
• Electrical quality factor QES 0.22
• Total quality factor QTS 0.21

Large signal parameters

• Maximum linear excursion xmax 7.5mm
• Maximum excursion before damage xlim 52mm
• Air volume displaced at xmax VD 660cm³
• Power handling P 800W
• Program power Pmax 1600W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.1Ω
• Inductance (1kHz) LE 0.8mH
• VC Diameter 101.6mm
• Winding height HVC 20mm

Magnet

• Force factor Bl 23.8N/A
• Motor constant Bl/√RE 10.5N/√W
• Air gap height HAG 12mm

Diaphragm

• Effective diameter 335mm
• Effective area SD 880cm²
• Moving mass MMS 98g
• Moving mass (without air load) MMD 80g

Suspensions

• Stiffness KMS 5.95N/mm
• Compliance CMS 168µm/N
• Equivalent volume to the compliance VAS 184L
• Mechanical resistance RMS 4.7N·s/m

Dimensions

• Nominal diameter 15″
• 380mm
• Overall diameter 388mm
• Baffle cutout diameter 352mm
• Overall depth 161mm
• Volume occupied by the driver (estimated) 3.3L
• Net weight 6.0kg